Crossover Cable Or Straight Through Between Multiple Hubs/switches
Answer : Most modern hardware – Ethernet switches and computer Ethernet interfaces – implements Auto-MDIX, automatically choosing the correct mode for each physical connection. (This is now a required part of Gigabit Ethernet, but also very common among 100 Mbps ports as well.) In other words, you can use the same type – regular straight-through cables – practically everywhere. Ethernet hubs, however, do not have this feature. They do not participate in link negotiation and only electrically connect all the devices. (Although your devices are probably switches mislabelled as hubs, not actual hubs.) Without this feature, two hubs or switches (just like two computers) would have needed a cross-over cable. That is, unless one switch had a dedicated 'Uplink' port, which would accept a straight-through cable instead. (Sometimes the last port had a physical toggle button for this.) I bought super cheap hubs from China so I'm honestly not even sure whether they have that ...